Thermally responsive spatially programmable soft actuators with multiple response states enabled by Grayscale UV light processing†

IF 12.2 2区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Yizong Li, Sooyeon Noh Coodley, Si Chen, Penghao Dong, Su Li and Shanshan Yao
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引用次数: 0

Abstract

Soft actuators hold great promise for applications in biomimetic robots, artificial muscles, and drug delivery systems due to their adaptability in diverse environments. A critical aspect of designing thermally responsive soft actuators is to achieve spatially programmable actuation under a global thermal stimulus. Different local actuation behaviors can be encoded in one actuator to enable complex morphing structures for different tasks. However, it is challenging to achieve programmability beyond one or binary states. This work introduces a new grayscale ultraviolet (UV) light processing method to fabricate soft actuators with spatially tunable Young's modulus, enabling multiple programmable states in one actuator. Together with a liquid crystal elastomer actuation layer and a photothermal heating layer, the LCE programming layer with spatially programmable moduli allows different regions of the soft actuator to bend to controllable extents under a global thermal stimulus. Various shape morphing patterns can be encoded using UV photomasks with spatially controlled grayscales. Additionally, caterpillar-inspired robots capable of bi-directional crawling and octopus-arm-inspired structures for object manipulation are demonstrated. This work represents advancements in the programmability of thermally responsive soft actuators, laying the foundation for their applications in advanced soft robotic systems.

Abstract Image

具有多种响应状态的热响应空间可编程软执行器,可通过灰度UV光处理实现。
软致动器由于其在不同环境中的适应性,在仿生机器人、人造肌肉和药物输送系统中具有很大的应用前景。设计热响应软执行器的一个关键方面是在全局热刺激下实现空间可编程驱动。不同的局部驱动行为可以在一个驱动器中编码,以实现不同任务的复杂变形结构。然而,实现一种或二进制状态之外的可编程性是具有挑战性的。本文介绍了一种新的灰度紫外线(UV)光处理方法,用于制造具有空间可调杨氏模量的软执行器,使一个执行器具有多个可编程状态。与液晶弹性体驱动层和光热加热层一起,具有空间可编程模块的LCE编程层允许软执行器的不同区域在全局热刺激下弯曲到可控的程度。各种形状的变形模式可以使用空间控制灰度的UV光掩模进行编码。此外,还展示了能够双向爬行的毛毛虫启发机器人和用于对象操作的章鱼臂启发结构。这项工作代表了热响应软执行器可编程性的进步,为其在先进软机器人系统中的应用奠定了基础。
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来源期刊
Materials Horizons
Materials Horizons CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
18.90
自引率
2.30%
发文量
306
审稿时长
1.3 months
期刊介绍: Materials Horizons is a leading journal in materials science that focuses on publishing exceptionally high-quality and innovative research. The journal prioritizes original research that introduces new concepts or ways of thinking, rather than solely reporting technological advancements. However, groundbreaking articles featuring record-breaking material performance may also be published. To be considered for publication, the work must be of significant interest to our community-spanning readership. Starting from 2021, all articles published in Materials Horizons will be indexed in MEDLINE©. The journal publishes various types of articles, including Communications, Reviews, Opinion pieces, Focus articles, and Comments. It serves as a core journal for researchers from academia, government, and industry across all areas of materials research. Materials Horizons is a Transformative Journal and compliant with Plan S. It has an impact factor of 13.3 and is indexed in MEDLINE.
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